Ortofon - MC X40 Phono Cartridge

A boron cantilever under a nude Shibata diamond — the specification that made this range’s reputation.

Every MC X shares one architecture: a honeycomb-structured stainless steel frame produced by metal injection moulding, a magnet system built around a one-piece pole cylinder and rear magnet yoke, custom-developed rubber dampers and high-purity silver coil wire. All five share 0.4mV output, 0.5dB channel balance, 6 ohm internal impedance, a 2.0g recommended tracking force and an 8.6g body. What separates the models is stylus profile, cantilever material, channel separation and compliance.

Until the X50 arrived in June 2026 the X40 was the top of the range, and Ortofon still describes it as designed for the most discerning audiophile. It pairs a nude Shibata diamond at r/R 6/50 µm with a boron cantilever, and the boron is the headline — Ortofon’s own engineer put it to a magazine as introducing a boron cantilever in a moving coil cartridge below a thousand pounds, and called it pretty magic.

Be clear about what changes and what does not. Published channel separation (26dB), frequency response (±1dB) and compliance (15 µm/mN) are identical to the X30 below it. The gain is entirely in the stylus profile and the rigidity of the cantilever.

Ortofon publishes a load above 50 ohms. Reviewers running it on the bench have found 100 ohms optimal in practice, which is worth knowing if your phono stage offers the choice.

Features

• Nude Shibata diamond, r/R 6/50 µm, on a boron cantilever
• Boron cantilever at a price point where it is genuinely unusual
• 26dB channel separation; ±1dB frequency response; 15 µm/mN compliance
• Honeycomb-structured stainless steel frame made by metal injection moulding
• High-purity silver coil wire
• 0.4mV output, 6 ohm internal impedance, 8.6g, 2.0g tracking force

Specifications

• Type: Moving coil stereo cartridge
• Output Voltage: 0.4mV at 1kHz, 5cm/sec
• Channel Balance at 1kHz: 0.5dB
• Channel Separation at 1kHz: 26dB
• Frequency Response: 20Hz – 20kHz, ±1dB
• Compliance: 15 µm/mN, dynamic lateral
• Stylus Type: Nude Shibata
• Stylus Tip Radius: r/R 6/50 µm
• Stylus Suspension: Ortofon exclusive
• Cantilever: Boron
• Coil Wire: High-purity silver
• Coil System: Ortofon’s specification table reads “quad coils” for this model where the other MC X models read “high-purity silver coil wire”. The separately published coil wire material is high-purity silver across the whole range, so this looks like inconsistent wording rather than a different design — but we cannot resolve it from Ortofon’s own data
• Magnet System: One-piece pole cylinder with rear magnet yoke
• Recommended Tracking Force: 2.0g
• Internal Impedance, DC Resistance: 6 Ω
• Recommended Load Resistance: Greater than 50 Ω. Independent bench testing has found 100 Ω optimal in practice — that is a reviewer finding, not an Ortofon specification
• Cartridge Weight: 8.6g
• Stylus Replacement: Ortofon states plainly that the styli in moving coil cartridges are non-replaceable, so there is no swap-in stylus for this cartridge. What Ortofon runs instead is an Exchange Service through participating authorised dealers: a worn or damaged MC cartridge — any condition, bought anywhere — is taken in at 25% of the current list price against the purchase of a new Ortofon cartridge of equivalent or better model. Note that is a credit against a new purchase, not a repair price. Ortofon also runs a separate Repair Service for out-of-warranty MC cartridges
• Tonearm Matching: Ortofon publishes no recommended tonearm effective mass for this model. Its general guidance is that an arm of 10g effective mass or below counts as low mass and 11 to 25g as moderate mass, that high mass requires low compliance and vice versa, and that the target is a cartridge and arm system resonance between 7 and 12Hz, with 10Hz recommended
• Stylus Life: Ortofon rates its styli at up to 1000 hours with proper care. This is a general figure across the range rather than a per-model specification
• Origin: Ortofon A/S of Nakskov, Denmark. Ortofon states that all its cartridges are designed and crafted in Denmark
• Warranty: Ortofon publishes no warranty period for its moving coil cartridges on its own site. Ortofon Inc. covers cartridges bought from an authorised US dealer for one year against defects in workmanship and materials, excluding expendable items
• Not Published: Channel separation at 15kHz; frequency range as distinct from frequency response; tracking ability at 315Hz; tracking angle; and any tracking force range — Ortofon gives a single recommended figure only. The MC X specification tables are materially shorter than those for Ortofon’s older ranges, and any listing quoting those figures for an MC X is using invented or third-party data. Ortofon also omits cartridge body material and colour from the X40 page specifically, though its series page states all MC X models share the metal-injection-moulded honeycomb stainless steel frame